Role of non-ferrous coal minerals and by-product metallic wastes in coal liquefaction. Technical progress report, September 1-November 30, 1979

Technical Report · Sat Dec 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/6387505· OSTI ID:6387505

Garg, D; Givens, E N; Clinton, J H; Tarrer, A R; Guin, J A; Curtis, C W; Huang, S M

This report describes work done in the first quarter of a study of the role of coal minerals and by-product metallic wastes in coal liquefaction. Samples of Elkhorn No. 3 coal, SRC-II Fuel Oil Blend, Robena pyrite and magnetite, and various other minerals were acquired. SRC-II Fuel Oil Blend was distilled to obtain the 550/sup 0/F+ fraction which will be used for coal liquefaction runs. The thermal stability of pyrite and other minerals was evaluated by thermal gravimetric analysis (TGA) in the presence of helium and hydrogen gases. Magnetite and zinc flue dusts (high and low zinc content) were found to be thermally stable in the inert atmosphere. Stoichiometric reduction of magnetite with hydrogen was obtained. Zinc flue dusts lost a maximum of 20% weight in the presence of hydrogen. Fly ash samples lost a maximum of 8% weight in the presence of helium and hydrogen gases. Stoichiometric reduction of Robena pyrite was observed both in helium and hydrogen gases. A pressurized thermal gravimetric reactor (PTGR) was used to determine the reactivity of the different minerals. The reduction of pyrite in the PTGR increased linearly with temperature, but the influence of hydrogen pressure was insignificant. The pyrolysis of pyrite was found to be an endothermic process, whereas oxidation of pyrite was exothermic. In batch autoclave tests, the Elkhorn No. 3 coal with 13.35% ash had 87% coal dissolution at 410/sup 0/C and 1250 psig hydrogen pressure (at 25/sup 0/C). Pyrite and several other minerals showed little improvement in naphthalene hydrogenation activity, whereas treated pyrite and pyrrhotite significantly improved this hydrogenation activity.

• Research Organization: Air Products and Chemicals, Inc., Trexlertown, PA (USA)
• DOE Contract Number: AC22-79ET14806
• OSTI ID: 6387505
• Report Number(s): DOE/ET/14806-T2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AEROSOL WASTES
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
AROMATICS
ASHES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CLAYS
COAL LIQUEFACTION
CONDENSED AROMATICS
DATA
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FLY ASH
GRAVIMETRIC ANALYSIS
HYDROCARBONS
HYDROGENATION
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
IRON SULFIDES
KAOLINITE
LIQUEFACTION
MAGNETITE
MATERIALS
MINERAL WASTES
MINERALS
MONTMORILLONITE
NAPHTHALENE
NUMERICAL DATA
ORES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYRITE
PYRITES
PYRRHOTITE
QUANTITATIVE CHEMICAL ANALYSIS
REDUCTION
RESIDUES
SILICATES
SILICON COMPOUNDS
SOLID WASTES
SPECTROSCOPY
SRC-II PROCESS
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
WASTES
ZINC COMPOUNDS
ZINC OXIDES